1 /*****************************************************************************
2 * zvbi.c : VBI and Teletext PES demux and decoder using libzvbi
3 *****************************************************************************
4 * Copyright (C) 2007, M2X
7 * Authors: Derk-Jan Hartman <djhartman at m2x dot nl>
8 * Jean-Paul Saman <jpsaman at m2x dot nl>
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 * information on teletext format can be found here :
28 * http://pdc.ro.nu/teletext.html
30 *****************************************************************************/
32 /* This module implements:
33 * ETSI EN 301 775: VBI data in PES
34 * ETSI EN 300 472: EBU Teletext data in PES
35 * ETSI EN 300 706: Enhanced Teletext (libzvbi)
36 * ETSI EN 300 231: Video Programme System [VPS] (libzvbi)
37 * ETSI EN 300 294: 625-line Wide Screen Signaling [WSS] (libzvbi)
38 * EIA-608 Revision A: Closed Captioning [CC] (libzvbi)
45 #include <vlc_common.h>
46 #include <vlc_plugin.h>
50 #include <vlc_codec.h>
52 /*****************************************************************************
54 *****************************************************************************/
55 static int Open ( vlc_object_t * );
56 static void Close( vlc_object_t * );
58 #define PAGE_TEXT N_("Teletext page")
59 #define PAGE_LONGTEXT N_("Open the indicated Teletext page." \
60 "Default page is index 100")
62 #define OPAQUE_TEXT N_("Teletext transparency")
63 #define OPAQUE_LONGTEXT N_("Setting vbi-opaque to false " \
64 "makes the boxed text transparent." )
66 #define POS_TEXT N_("Teletext alignment")
67 #define POS_LONGTEXT N_( \
68 "You can enforce the teletext position on the video " \
69 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
70 "also use combinations of these values, eg. 6 = top-right).")
72 #define TELX_TEXT N_("Teletext text subtitles")
73 #define TELX_LONGTEXT N_( "Output teletext subtitles as text " \
74 "instead of as RGBA" )
76 static const int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
77 static const char *const ppsz_pos_descriptions[] =
78 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
79 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
82 set_description( N_("VBI and Teletext decoder") )
83 set_shortname( N_("VBI & Teletext") )
84 set_capability( "decoder", 51 )
85 set_category( CAT_INPUT )
86 set_subcategory( SUBCAT_INPUT_SCODEC )
87 set_callbacks( Open, Close )
89 add_integer( "vbi-page", 100,
90 PAGE_TEXT, PAGE_LONGTEXT, false )
91 add_bool( "vbi-opaque", true,
92 OPAQUE_TEXT, OPAQUE_LONGTEXT, false )
93 add_integer( "vbi-position", 4, POS_TEXT, POS_LONGTEXT, false )
94 change_integer_list( pi_pos_values, ppsz_pos_descriptions );
95 add_bool( "vbi-text", false,
96 TELX_TEXT, TELX_LONGTEXT, false )
99 /****************************************************************************
101 ****************************************************************************/
103 // #define ZVBI_DEBUG
105 //Guessing table for missing "default region triplet"
106 static const int pi_default_triplet[] = {
107 0, 0, 0, 0, // slo slk cze ces
109 24,24,24,24,24, //scc scr srp hrv slv
111 32,32,32,32,32, //est lit rus bul ukr
116 static const char *const ppsz_default_triplet[] = {
117 "slo", "slk", "cze", "ces",
119 "scc", "scr", "srp", "hrv", "slv",
121 "est", "lit", "rus", "bul", "ukr",
129 ZVBI_KEY_RED = 'r' << 16,
130 ZVBI_KEY_GREEN = 'g' << 16,
131 ZVBI_KEY_YELLOW = 'y' << 16,
132 ZVBI_KEY_BLUE = 'b' << 16,
133 ZVBI_KEY_INDEX = 'i' << 16,
137 DATA_UNIT_EBU_TELETEXT_NON_SUBTITLE = 0x02,
138 DATA_UNIT_EBU_TELETEXT_SUBTITLE = 0x03,
139 DATA_UNIT_EBU_TELETEXT_INVERTED = 0x0C,
141 DATA_UNIT_ZVBI_WSS_CPR1204 = 0xB4,
142 DATA_UNIT_ZVBI_CLOSED_CAPTION_525 = 0xB5,
143 DATA_UNIT_ZVBI_MONOCHROME_SAMPLES_525 = 0xB6,
145 DATA_UNIT_VPS = 0xC3,
146 DATA_UNIT_WSS = 0xC4,
147 DATA_UNIT_CLOSED_CAPTION = 0xC5,
148 DATA_UNIT_MONOCHROME_SAMPLES = 0xC6,
150 DATA_UNIT_STUFFING = 0xFF,
153 #define MAX_SLICES 32
157 vbi_decoder * p_vbi_dec;
158 vbi_sliced p_vbi_sliced[MAX_SLICES];
159 unsigned int i_last_page;
161 bool b_text; /* Subtitles as text */
163 vlc_mutex_t lock; /* Lock to protect the following variables */
164 /* Positioning of Teletext images */
167 unsigned int i_wanted_page;
168 unsigned int i_wanted_subpage;
177 static subpicture_t *Decode( decoder_t *, block_t ** );
179 static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
181 int i_columns, int i_rows,
182 int i_align, mtime_t i_pts );
184 static void EventHandler( vbi_event *ev, void *user_data );
185 static int OpaquePage( picture_t *p_src, const vbi_page p_page,
186 const video_format_t fmt, bool b_opaque );
188 /* Properties callbacks */
189 static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
190 vlc_value_t oldval, vlc_value_t newval, void *p_data );
191 static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
192 vlc_value_t oldval, vlc_value_t newval, void *p_data );
193 static int Position( vlc_object_t *p_this, char const *psz_cmd,
194 vlc_value_t oldval, vlc_value_t newval, void *p_data );
195 static int EventKey( vlc_object_t *p_this, char const *psz_cmd,
196 vlc_value_t oldval, vlc_value_t newval, void *p_data );
198 /*****************************************************************************
199 * Open: probe the decoder and return score
200 *****************************************************************************
201 * Tries to launch a decoder and return score so that the interface is able
203 *****************************************************************************/
204 static int Open( vlc_object_t *p_this )
206 decoder_t *p_dec = (decoder_t *) p_this;
207 decoder_sys_t *p_sys = NULL;
209 if( p_dec->fmt_in.i_codec != VLC_CODEC_TELETEXT )
212 p_dec->pf_decode_sub = Decode;
213 p_sys = p_dec->p_sys = calloc( 1, sizeof(decoder_sys_t) );
217 p_sys->i_key[0] = p_sys->i_key[1] = p_sys->i_key[2] = '*' - '0';
218 p_sys->b_update = false;
219 p_sys->p_vbi_dec = vbi_decoder_new();
220 vlc_mutex_init( &p_sys->lock );
222 if( p_sys->p_vbi_dec == NULL )
224 msg_Err( p_dec, "VBI decoder could not be created." );
229 /* Some broadcasters in countries with level 1 and level 1.5 still not send a G0 to do
230 * matches against table 32 of ETSI 300 706. We try to do some best effort guessing
231 * This is not perfect, but might handle some cases where we know the vbi language
232 * is known. It would be better if people started sending G0 */
233 for( int i = 0; ppsz_default_triplet[i] != NULL; i++ )
235 if( p_dec->fmt_in.psz_language && !strcasecmp( p_dec->fmt_in.psz_language, ppsz_default_triplet[i] ) )
237 vbi_teletext_set_default_region( p_sys->p_vbi_dec, pi_default_triplet[i]);
238 msg_Dbg( p_dec, "overwriting default zvbi region: %d", pi_default_triplet[i] );
242 vbi_event_handler_register( p_sys->p_vbi_dec, VBI_EVENT_TTX_PAGE | VBI_EVENT_NETWORK |
244 VBI_EVENT_CAPTION | VBI_EVENT_TRIGGER |
245 VBI_EVENT_ASPECT | VBI_EVENT_PROG_INFO | VBI_EVENT_NETWORK_ID |
247 0 , EventHandler, p_dec );
249 /* Create the var on vlc_global. */
250 p_sys->i_wanted_page = var_CreateGetInteger( p_dec, "vbi-page" );
251 var_AddCallback( p_dec, "vbi-page", RequestPage, p_sys );
253 /* Check if the Teletext track has a known "initial page". */
254 if( p_sys->i_wanted_page == 100 && p_dec->fmt_in.subs.teletext.i_magazine != -1 )
256 p_sys->i_wanted_page = 100 * p_dec->fmt_in.subs.teletext.i_magazine +
257 vbi_bcd2dec( p_dec->fmt_in.subs.teletext.i_page );
258 var_SetInteger( p_dec, "vbi-page", p_sys->i_wanted_page );
260 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
262 p_sys->b_opaque = var_CreateGetBool( p_dec, "vbi-opaque" );
263 var_AddCallback( p_dec, "vbi-opaque", Opaque, p_sys );
265 p_sys->i_align = var_CreateGetInteger( p_dec, "vbi-position" );
266 var_AddCallback( p_dec, "vbi-position", Position, p_sys );
268 p_sys->b_text = var_CreateGetBool( p_dec, "vbi-text" );
269 // var_AddCallback( p_dec, "vbi-text", Text, p_sys );
271 /* Listen for keys */
272 var_AddCallback( p_dec->p_libvlc, "key-pressed", EventKey, p_dec );
274 es_format_Init( &p_dec->fmt_out, SPU_ES, VLC_CODEC_SPU );
276 p_dec->fmt_out.video.i_chroma = VLC_CODEC_TEXT;
278 p_dec->fmt_out.video.i_chroma = VLC_CODEC_RGBA;
282 /*****************************************************************************
284 *****************************************************************************/
285 static void Close( vlc_object_t *p_this )
287 decoder_t *p_dec = (decoder_t*) p_this;
288 decoder_sys_t *p_sys = p_dec->p_sys;
290 var_DelCallback( p_dec, "vbi-position", Position, p_sys );
291 var_DelCallback( p_dec, "vbi-opaque", Opaque, p_sys );
292 var_DelCallback( p_dec, "vbi-page", RequestPage, p_sys );
293 var_DelCallback( p_dec->p_libvlc, "key-pressed", EventKey, p_dec );
295 vlc_mutex_destroy( &p_sys->lock );
297 if( p_sys->p_vbi_dec )
298 vbi_decoder_delete( p_sys->p_vbi_dec );
302 #ifdef WORDS_BIGENDIAN
303 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_BE
305 # define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_LE
308 /*****************************************************************************
310 *****************************************************************************/
311 static subpicture_t *Decode( decoder_t *p_dec, block_t **pp_block )
313 decoder_sys_t *p_sys = p_dec->p_sys;
315 subpicture_t *p_spu = NULL;
317 bool b_cached = false;
320 if( (pp_block == NULL) || (*pp_block == NULL) )
326 if( p_block->i_buffer > 0 &&
327 ( ( p_block->p_buffer[0] >= 0x10 && p_block->p_buffer[0] <= 0x1f ) ||
328 ( p_block->p_buffer[0] >= 0x99 && p_block->p_buffer[0] <= 0x9b ) ) )
330 vbi_sliced *p_sliced = p_sys->p_vbi_sliced;
331 unsigned int i_lines = 0;
335 while( p_block->i_buffer >= 2 )
337 int i_id = p_block->p_buffer[0];
338 unsigned i_size = p_block->p_buffer[1];
340 if( 2 + i_size > p_block->i_buffer )
343 if( ( i_id == 0x02 || i_id == 0x03 ) && i_size >= 44 && i_lines < MAX_SLICES )
345 unsigned line_offset = p_block->p_buffer[2] & 0x1f;
346 unsigned field_parity = p_block->p_buffer[2] & 0x20;
348 p_sliced[i_lines].id = VBI_SLICED_TELETEXT_B;
349 if( line_offset > 0 )
350 p_sliced[i_lines].line = line_offset + (field_parity ? 0 : 313);
352 p_sliced[i_lines].line = 0;
353 for( int i = 0; i < 42; i++ )
354 p_sliced[i_lines].data[i] = vbi_rev8( p_block->p_buffer[4 + i] );
358 p_block->i_buffer -= 2 + i_size;
359 p_block->p_buffer += 2 + i_size;
363 vbi_decode( p_sys->p_vbi_dec, p_sliced, i_lines, (double)p_block->i_pts / 1000000 );
367 vlc_mutex_lock( &p_sys->lock );
368 const int i_align = p_sys->i_align;
369 const unsigned int i_wanted_page = p_sys->i_wanted_page;
370 const unsigned int i_wanted_subpage = p_sys->i_wanted_subpage;
371 const bool b_opaque = p_sys->b_opaque;
372 vlc_mutex_unlock( &p_sys->lock );
374 /* Try to see if the page we want is in the cache yet */
375 memset( &p_page, 0, sizeof(vbi_page) );
376 b_cached = vbi_fetch_vt_page( p_sys->p_vbi_dec, &p_page,
377 vbi_dec2bcd( i_wanted_page ),
378 i_wanted_subpage, VBI_WST_LEVEL_3p5,
381 if( i_wanted_page == p_sys->i_last_page && !p_sys->b_update )
386 if( p_sys->i_last_page != i_wanted_page )
388 /* We need to reset the subtitle */
389 p_spu = Subpicture( p_dec, &fmt, true,
390 p_page.columns, p_page.rows,
391 i_align, p_block->i_pts );
394 p_spu->p_region->psz_text = strdup("");
396 p_sys->b_update = true;
397 p_sys->i_last_page = i_wanted_page;
403 p_sys->b_update = false;
404 p_sys->i_last_page = i_wanted_page;
406 msg_Dbg( p_dec, "we now have page: %d ready for display",
409 /* If there is a page or sub to render, then we do that here */
410 /* Create the subpicture unit */
411 p_spu = Subpicture( p_dec, &fmt, p_sys->b_text,
412 p_page.columns, p_page.rows,
413 i_align, p_block->i_pts );
419 unsigned int i_textsize = 7000;
421 char p_text[i_textsize+1];
423 i_total = vbi_print_page_region( &p_page, p_text, i_textsize,
424 "UTF-8", 0, 0, 0, 0, p_page.columns, p_page.rows );
425 p_text[i_total] = '\0';
426 /* Strip off the pagenumber */
429 p_spu->p_region->psz_text = strdup( &p_text[8] );
432 msg_Info( p_dec, "page %x-%x(%d)\n%s", p_page.pgno, p_page.subno, i_total, p_text );
437 picture_t *p_pic = p_spu->p_region->p_picture;
439 /* ZVBI is stupid enough to assume pitch == width */
440 p_pic->p->i_pitch = 4 * fmt.i_width;
441 vbi_draw_vt_page( &p_page, ZVBI_PIXFMT_RGBA32,
442 p_spu->p_region->p_picture->p->p_pixels, 1, 1 );
444 vlc_mutex_lock( &p_sys->lock );
445 memcpy( p_sys->nav_link, &p_page.nav_link, sizeof( p_sys->nav_link )) ;
446 vlc_mutex_unlock( &p_sys->lock );
448 OpaquePage( p_pic, p_page, fmt, b_opaque );
452 vbi_unref_page( &p_page );
453 block_Release( p_block );
457 vbi_unref_page( &p_page );
460 decoder_DeleteSubpicture( p_dec, p_spu );
464 block_Release( p_block );
468 static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
470 int i_columns, int i_rows, int i_align,
476 /* If there is a page or sub to render, then we do that here */
477 /* Create the subpicture unit */
478 p_spu = decoder_NewSubpicture( p_dec, NULL );
481 msg_Warn( p_dec, "can't get spu buffer" );
485 memset( &fmt, 0, sizeof(video_format_t) );
486 fmt.i_chroma = b_text ? VLC_CODEC_TEXT : VLC_CODEC_RGBA;
491 fmt.i_bits_per_pixel = 0;
495 fmt.i_width = fmt.i_visible_width = i_columns * 12;
496 fmt.i_height = fmt.i_visible_height = i_rows * 10;
497 fmt.i_bits_per_pixel = 32;
499 fmt.i_x_offset = fmt.i_y_offset = 0;
501 p_spu->p_region = subpicture_region_New( &fmt );
502 if( p_spu->p_region == NULL )
504 msg_Err( p_dec, "cannot allocate SPU region" );
505 decoder_DeleteSubpicture( p_dec, p_spu );
509 p_spu->p_region->i_x = 0;
510 p_spu->p_region->i_y = 0;
511 p_spu->p_region->i_align = i_align;
513 p_spu->i_start = i_pts;
515 p_spu->b_ephemer = true;
516 p_spu->b_absolute = false;
520 p_spu->i_original_picture_width = fmt.i_width;
521 p_spu->i_original_picture_height = fmt.i_height;
529 static void EventHandler( vbi_event *ev, void *user_data )
531 decoder_t *p_dec = (decoder_t *)user_data;
532 decoder_sys_t *p_sys = p_dec->p_sys;
534 if( ev->type == VBI_EVENT_TTX_PAGE )
537 msg_Info( p_dec, "Page %03x.%02x ",
538 ev->ev.ttx_page.pgno,
539 ev->ev.ttx_page.subno & 0xFF);
541 if( p_sys->i_last_page == vbi_bcd2dec( ev->ev.ttx_page.pgno ) )
542 p_sys->b_update = true;
544 if( ev->ev.ttx_page.clock_update )
545 msg_Dbg( p_dec, "clock" );
546 if( ev->ev.ttx_page.header_update )
547 msg_Dbg( p_dec, "header" );
550 else if( ev->type == VBI_EVENT_CLOSE )
551 msg_Dbg( p_dec, "Close event" );
552 else if( ev->type == VBI_EVENT_CAPTION )
553 msg_Dbg( p_dec, "Caption line: %x", ev->ev.caption.pgno );
554 else if( ev->type == VBI_EVENT_NETWORK )
556 msg_Dbg( p_dec, "Network change");
557 vbi_network n = ev->ev.network;
558 msg_Dbg( p_dec, "Network id:%d name: %s, call: %s ", n.nuid, n.name, n.call );
560 else if( ev->type == VBI_EVENT_TRIGGER )
561 msg_Dbg( p_dec, "Trigger event" );
562 else if( ev->type == VBI_EVENT_ASPECT )
563 msg_Dbg( p_dec, "Aspect update" );
564 else if( ev->type == VBI_EVENT_PROG_INFO )
565 msg_Dbg( p_dec, "Program info received" );
566 else if( ev->type == VBI_EVENT_NETWORK_ID )
567 msg_Dbg( p_dec, "Network ID changed" );
570 static int OpaquePage( picture_t *p_src, const vbi_page p_page,
571 const video_format_t fmt, bool b_opaque )
575 assert( fmt.i_chroma == VLC_CODEC_RGBA );
577 /* Kludge since zvbi doesn't provide an option to specify opacity. */
578 for( y = 0; y < fmt.i_height; y++ )
580 for( x = 0; x < fmt.i_width; x++ )
582 const vbi_opacity opacity = p_page.text[ y/10 * p_page.columns + x/12 ].opacity;
583 const int background = p_page.text[ y/10 * p_page.columns + x/12 ].background;
584 uint32_t *p_pixel = (uint32_t*)&p_src->p->p_pixels[y * p_src->p->i_pitch + 4*x];
588 /* Show video instead of this character */
589 case VBI_TRANSPARENT_SPACE:
592 /* Display foreground and background color */
593 /* To make the boxed text "closed captioning" transparent
594 * change true to false.
597 /* alpha blend video into background color */
598 case VBI_SEMI_TRANSPARENT:
601 /* Full text transparency. only foreground color is show */
602 case VBI_TRANSPARENT_FULL:
603 if( (*p_pixel) == (0xff000000 | p_page.color_map[background] ) )
614 static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
615 vlc_value_t oldval, vlc_value_t newval, void *p_data )
617 decoder_sys_t *p_sys = p_data;
618 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
620 vlc_mutex_lock( &p_sys->lock );
621 switch( newval.i_int )
624 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[0].pgno );
625 p_sys->i_wanted_subpage = p_sys->nav_link[0].subno;
628 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[1].pgno );
629 p_sys->i_wanted_subpage = p_sys->nav_link[1].subno;
631 case ZVBI_KEY_YELLOW:
632 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[2].pgno );
633 p_sys->i_wanted_subpage = p_sys->nav_link[2].subno;
636 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[3].pgno );
637 p_sys->i_wanted_subpage = p_sys->nav_link[3].subno;
640 p_sys->i_wanted_page = vbi_bcd2dec( p_sys->nav_link[5].pgno ); /* #4 is SKIPPED */
641 p_sys->i_wanted_subpage = p_sys->nav_link[5].subno;
644 if( newval.i_int > 0 && newval.i_int < 999 )
646 p_sys->i_wanted_page = newval.i_int;
647 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
649 vlc_mutex_unlock( &p_sys->lock );
654 static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
655 vlc_value_t oldval, vlc_value_t newval, void *p_data )
657 decoder_sys_t *p_sys = p_data;
658 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
660 vlc_mutex_lock( &p_sys->lock );
661 p_sys->b_opaque = newval.b_bool;
662 p_sys->b_update = true;
663 vlc_mutex_unlock( &p_sys->lock );
668 static int Position( vlc_object_t *p_this, char const *psz_cmd,
669 vlc_value_t oldval, vlc_value_t newval, void *p_data )
671 decoder_sys_t *p_sys = p_data;
672 VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
674 vlc_mutex_lock( &p_sys->lock );
675 p_sys->i_align = newval.i_int;
676 vlc_mutex_unlock( &p_sys->lock );
681 static int EventKey( vlc_object_t *p_this, char const *psz_cmd,
682 vlc_value_t oldval, vlc_value_t newval, void *p_data )
684 decoder_t *p_dec = p_data;
685 decoder_sys_t *p_sys = p_dec->p_sys;
687 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED( p_this );
689 /* FIXME: Capture + and - key for subpage browsing */
690 if( newval.i_int == '-' || newval.i_int == '+' )
692 vlc_mutex_lock( &p_sys->lock );
693 if( p_sys->i_wanted_subpage == VBI_ANY_SUBNO && newval.i_int == '+' )
694 p_sys->i_wanted_subpage = vbi_dec2bcd(1);
695 else if ( newval.i_int == '+' )
696 p_sys->i_wanted_subpage = vbi_add_bcd( p_sys->i_wanted_subpage, 1);
697 else if( newval.i_int == '-')
698 p_sys->i_wanted_subpage = vbi_add_bcd( p_sys->i_wanted_subpage, 0xF9999999); /* BCD complement - 1 */
700 if ( !vbi_bcd_digits_greater( p_sys->i_wanted_subpage, 0x00 ) || vbi_bcd_digits_greater( p_sys->i_wanted_subpage, 0x99 ) )
701 p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
703 msg_Info( p_dec, "subpage: %d",
704 vbi_bcd2dec( p_sys->i_wanted_subpage) );
706 p_sys->b_update = true;
707 vlc_mutex_unlock( &p_sys->lock );
710 /* Capture 0-9 for page selection */
711 if( newval.i_int < '0' || newval.i_int > '9' )
714 vlc_mutex_lock( &p_sys->lock );
715 p_sys->i_key[0] = p_sys->i_key[1];
716 p_sys->i_key[1] = p_sys->i_key[2];
717 p_sys->i_key[2] = (int)(newval.i_int - '0');
718 msg_Info( p_dec, "page: %c%c%c", (char)(p_sys->i_key[0]+'0'),
719 (char)(p_sys->i_key[1]+'0'), (char)(p_sys->i_key[2]+'0') );
723 if( p_sys->i_key[0] > 0 && p_sys->i_key[0] <= 8 &&
724 p_sys->i_key[1] >= 0 && p_sys->i_key[1] <= 9 &&
725 p_sys->i_key[2] >= 0 && p_sys->i_key[2] <= 9 )
727 i_new_page = p_sys->i_key[0]*100 + p_sys->i_key[1]*10 + p_sys->i_key[2];
728 p_sys->i_key[0] = p_sys->i_key[1] = p_sys->i_key[2] = '*' - '0';
730 vlc_mutex_unlock( &p_sys->lock );
733 var_SetInteger( p_dec, "vbi-page", i_new_page );